Ventilator



March 29, 1949.

Filed Sept. 21, 1945 L. GILBERT El'AL VENTILATOR 7 Sheets-Sheet 5 March 29, 1949. GILBERT ETI'AL 2,465,642

VENTILATOR 7 Sheets-Sheet 6 Filed Sept. 21, 1945 Patented Mar. 29, 1949 VENTILATOR Lethieullier Gilbert, Woking, and Leslie James Hobson, Farnham, England Application September 21, 1945, Serial No. 617,714 In Great Britain September 25, 1944 3 Claims. I

This invention relates to ventilators and is an improvement in or a modification of the prior British Patent No. 552,195 granted to the second mentioned applicant herein and has for its object to provide improvements therein.

According to one aspect of the invention a ventilator of transparent or translucent or obscure material, for example, glass, is provided comprising male and female units, a projection on the male unit entering a recess in the female unit, the said projection having opposite sides spaced apart from the adjacent walls of the female unit so as to form a passage between said male and female units for the passage of air, a shutter rectilinearly movable relative to said passage to control the passage of air therethrough as a consequence of said control, and means for imparting rectilinear motion to said shutter.

The accompanying drawings illustrate a ventilator made in accordance with the present invention.

Fig. 1 is a front elevation of one form of the invention.

Fig. 2 is a sectional elevation on line II--II, Fig. 1.

Fig. 3 is a sectional elevation on line IIIIII, Fig. 1.

Fig. 4 is a cross section on line IV-IV, Fig. 2.

Fig. 5 is a cross section on line V-V, Fig. 2.

Fig. 6 is a front elevation of a second form of the invention.

Fig. 7 is a sectional elevation on line VIIVII, Fig. 6.

Fig. 8 is a sectional elevation on line VIII- VIII, Fig. 6.

Fig. 9 is a cross section on line IX-IX, Fig. '7.

Fig. 10 is a cross section on line XX, Fig. 7.

Fig. 11 is a front elevation of a further modiflcation.

Fig. 12 is a section on line )HI-XII, Fig. 13.

Fig. 13 is a section on line XIII-XIII, Fig. 12.

Fig. 14 is a section on line XIV-XIV, Fig. 12.

In the form illustrated in Figs. 1 to 5 four rectangular transparent glass units I, 2, 3, 4 are shown, of which I is the bottom or male unit, 4 is the top or female unit, and 2 and 3 are intermediate male and female combined units.

Units I, 2 and 3 have longitudinal medial top ribs 5, 6, 1. Units 2, 3 and 4 have longitudinal bottom recesses 8, 9, I0.

It will be noted that ribs 5, 6, I are somewhat offset from the medial longitudinal planes of the units I, 2, 3 in order that there may still be a symmetrical passage for air when the movable glass shutters I I, I2, I3 are in place.

Units I, 2, 3 are provided with transverse walls I4, I5 at the ends of ribs 5, 6, 1. Units 2, 3, 4 are provided with transverse walls Ilia, I Ia at the ends of recesses 8, 9, I 0.

The walls I6a, I Ia are recessed at I8 to accommodate the ends of the ribs 5, 6, I which rise above the adjacent top walls Ia, 2a, 3a. vCooperating walls are so formed as to register when the units are assembled and to facilitate the joining of the ends of the units in a good finish.

Guide slots I9, 20, 2I, 22 are provided in the end walls to accommodate the ends 23, 24 of the glass shutters. The set of slots I9, 2I are made wider than those slots 20, 22 to enable broken shutters to be easily removed for replacement.

Sinkings 25 are provided in the glass units to accommodate shutter lifting arms 26. The front walls of the recesses of the units are provided with holes 21 to accommodate bolts for holding the shutter handle.

The shutter arms 26 are substantially L-shaped and grip the shutters I3 between the long arms 28 and inwardly turned free end 2311 of the shorter arms 39 thereof which are accommodated in counter sinkings 3| in the shutters. The longer arms 28 are provided with upturned ribs 29b to hold the shutters II, I2, I3 in place. The outer ends 32 of the longer arms are orificed at33 for the passage of a tube 34 through which passes a bolt 35. To the ends of the bolt 35 are screwed nuts 36 which grip between them the ends of hollow shutter handle or cover 37. Interior projections 38a and 38b are provided 'within the handle 31 which accommodate between them the free ends of arms 26 to prevent movement thereof parallel to the longitudinal axis of tube 34. Means for engaging the upper and lower arms 25, 28 comprises the projections 380. and 381) on the handle and the orifices 33a and 33b therein.

The tube 34 passes through the arms of U shaped brackets 39 which are secured to or are integral with bolts ll which themselves pass through cork bushes fitting in holes 21 in the walls IBb of the units. The bushes II are held in place by metal washers 42 with collars between which and the cork bushings are arranged cork collars 43. End nuts 44 are provided on the bolt ends.

Between the arms 45 of one of the U-shaped brackets 39 a helical spring 46 is arranged around the tube 34 frictionally to grip the same. The spring 46 is held at its ends between the arms 45 of the bracket 39 and by its torsional pressure grips the tube 34. When the handle 31 is raised or lowered, the tube 34, which is secured against longitudinal movement relative to the handle 31 by means of bolt 35 and nuts 36., is gripped by the spring 46 with just suflicien't force to hold it in its position against downward tractive force of gravity.

As will be seen from Figures 2 and 5 of the drawings, the arms 26 extend horizontally along the upper faces I a, 2a, 3a of the walls I, .2 and 3 and then are bent at right angles upwards and around to clip shutters I I, I2 and I3.

The ribs 291) are portions out out of the medial part of the horizontal arms of the shutter arms 26 and are bent upwards so as to form abutments for the shutters ll, [2 and I3.

The handle or cover may be exteriorly marked with indication to show which direction of motion gives the open position and which the closed.

The use of the tube 34 enables the mechanism to be assembled and adjusted and the shutter arms to be located. The handle 3'! is then slid on and the bolt 35 dropped through.

In operation assuming the units and nuts are fixed in superposed relationship to form a ventilator to open the ventilator the handle or cover 3-! is pressed down as far as it will go against the friction of the clutch spring '46 and carries with it the shutter arms .26 and therefore the shutters H, 12 and 13, the ends of which slide in the guide slots I9, 20, 21, 22.

The downward motion of the arms 26 is limited by the bases of units I, 2 and 3.

The air travels around the rectangular path between the upper surface of a lower unit and the lower surface of the unit next above it.

To close the ventilator the handle 37 is moved upwards for part or the whole extent of its possible motion in that direction as required. The handle 31 carries with it the arms 26 and therefore the shutters 13. The ends of the shutters slide in the guide slots 19, 20, 2|, 22. The shutters close the air paths between adjacent units.

In a modified form of the invention as illustrated in Figs. 6 to the general arrangement is substantially the same except that the shutters l3 and their guide slots I9, 20, 2!, 22 are moved adjacent to the walls of the units next the cover or handle.

In this case the handle 31a is functionally controlled by cork clutches 46a. The cork clutches 460 are held in position by upper and lower clip members 41, 48 terminating in clips 49, 50 bent over to embrace the adjacent unit walls I61) at the top and bottom. These unit walls I 612' are grooved at the top at 5| to receive the upper downwardly bent clips 49 and at the bottom at 52 to receive the upwardly bent lower clips 50. Cork washers 53 are placed between the lower clips :50 and the bottom surfaces of the walls l-Bb engaged by them. The cork clutches 46a and their jaws are kept in proper alignment by screw bolts 54 passing through coaxial holes 55 in washers and clips. Nuts and washers56, 51 are employed to hold the bolts 54 longitudinally in place. The handle 31a is slidably mounted in the cork clutches by a tube and bolt arranged substantially the same as that described with reference to the previous example.

The ventilator illustrated in Figs. 11, -12, 13 and 14 is designed to enable the makers to supply it in individual units (top 4a, intermediate 3a or bottom 2a) to builders and so on in order that they may assemble it to their individual requirements. So far as possible the same reference numerals are applied to corresponding parts as in Figs. 1 to 5. Where a ventilator of less or more units is required the mechanism is the same with the exception that the dome shaped cover 36a], 3M2, the assembly tube 34a and the guide rod 35a are cut to suit requirements. For this reason the guide rod 35a is only threaded at one endconsequently any adjustments to its length will be done by cutting off the unthreaded end and therefore no new threads will have to be out.

'There are end springs 46a, and 46al, the lower one 46a. lying housed in a tube 46112, in which cover 36:02 slides. Nuts 2a2, 2a3 serve for locking and adjustment.

The guide rod sockets Zal, 4al, are so designed that when placed in positiontouching the ventilator-the guide rod 35a will then be the correct distance from the ventilator to ensure that the shutters I2a, l3a will be properly spaced laterally.

The sections of the three units maybe varied to suit the mould requirements of the material in which it is made-such as tapered in section and corners rounded.

It will be understoodv that details of construction may be varied in many ways without departing from the scope of the invention.

What we claim and desire to secure by Letters Fatent is:

1. A ventilator comprising a series of male and female units, projections on the male units entering recesses in the female units, the said projections having opposite sides spaced apart from the adjacent walls of the female units so as "to form passages between said male and female units for the passage of air, guides in the walls of said female units, shutters rectilinearly movable in said guides relative to said passages to control the passage of air therethrough as a consequence of said motion, arms connected to said shutters. a cylindrical member connecting said arms, a frictional member disposed about and gripping said cylindrical member to maintain it in an adjusted position, and a handle attached to said shutters for imparting motion thereto.

2. A ventilator comprising a series of male and female units, projections on the male units entering recesses in the female units, the said projections having opposite sides spaced apart from the adjacent walls of the female units so as to form passages between said male and female units for the passage of air, guides in the walls of said female units, shutters rectilinearly movable in said guides relative to said passages to control the passage of air therethrough as a consequence of said motion, arms connectedto said shutters, a cylindrical member connecting said arms, cork friction members fastened to the adjacent walls of the ventilator and gripping said cylindrical connecting member, and a handle attached to said shutters for imparting motion thereto.

3. A ventilator comprising a series of male and female units, projections on the male units entering recesses in the female units, the said projections having opposite sides spaced apart from the adjacent walls of the female units so as to form passages between said male and female units for the passage of air, shutters rectilinearly movable relative to said passages to control the passage of air therethrough as a consequence of said motion, arms connected to said shutters, a 5 cylindrical member connecting said arms, a frictional member disposed about and gripping said cylindrical member to maintain it in an adjusted position, and a handle attached to said shutters for imparting motion thereto. 10

LETI-IIEULLIER GILBERT. LESLIE JAMES HOBSON.

REFERENCES CITED The following references are of record in the 5 file of this patent:

Number Number UNITED STATES PATENTS Name Date Gailey Mar. 28, 1905 Loehler June 8, 1909 Sigal July 12, 1938 Rose Oct. 1, 1940 Beil Jan. 12, 1943 Nelson Feb. 8, 1944 Dodgson May 16, 1944 FOREIGN PATENTS Country Date Great Britain 1859 Italy Sept. 24, 1932 Great Britain Mar. 26, 1943 

